Dental and surgical lamp.



G. F. RODGERS.

DENTAL A ND SURGICAL LAM! APPLIOATIOI nun In. 21, 1910.

Patented Dec. 17, 1912.

2 SHEETSSHEET 1.

GFJQUZLOGTJ I G. F. RODGERS.

DENTAL AN'D SUBG/IGA'L LAMP. A'PPLIOATIOH nun m2. 21, 1910.

Patented Dec. 17,1912.

2 SHEETS-SHEET 2.'

Y J JJJJ a UNITED STATES PATENT oFrIoE.--

CLARENCE r. noneaas, or conimau'r, omo.

DENTAL AND sUReIcAL Lmr'.

Application filed March 21, 1910. Serial No. 550,792.

Specification of Letters Patent.

Patented De'c.17,1912.

To all whom it may concern:

Be it known that I, CLARENCE F. Romans,-

citizen of the United States, residing at Cont of Fig. 3; and, Fig. 6 is 'a perspective deneaut, in the county of Ashtabula and State of Ohio, have invented certain new and useful Improvements in Dental and Surgical Lamps, of which the following is a specification.

My invention relates to lamp holders for surgeons and dentists use and the object.

of my invention is to rovide an improved lamp and holder therefdr designed to throw concentratedrays of light in one direction upon a desired object by means of telescopic tubes and a system of lenses mounted in the tubes, these lenses being of such form and so arranged that they may throw the parallel rays of light within a desired spaceand within a certain degree of adjustability.

A further object is to improve the dental and surgical lamp described'and set forth in my Patent No. 811,442 of January 30, 1906, whereby a support may be provided for the lens and lamp holder so as to take all strain upon the electric light cords or conductors and permit the lamp and lamp holder to be held in any adjusted position with relation to the patient. v

A further object of the invention is to provide a system of two lenses for this purpose, one of these lenses being adjustable with relation to the other so that the distance to which the concentrated 1 rays may be thrown shall be adjustable. Further to proan enlarged longitudinal section of the bodyof the lamp holderand showing the lamp in place; Fig. 4 is a section on the line l i of Fig. 3; Fig. 5 is a section 'on the line 55 tail view of the parts forming the swivel connectlon between the body of thelanip holder and its support.

Corresponding and like parts are referred "to-"in the followin description and indicated in all the views 0 the drawingsby the me reference characters.

Referring to-these figures, 2 designwzz cylindrical body of sheet metal'forming alens carrier, one end of the body being open,

as at 3, and lined on its interior with velvet,

felt or'black cloth a, whereby the sliptubemay be moved easily into the outer tube or body 2. The other end of the tubular body 2 is cut away on its "underside, as at 2, to sucha distance from that extremity of the body that a lamp may-be accommodated beneath the projecting hood 5 so formed, and so that it will tend to shade the lamp and prevent the too great upward diffusion of the light therefrom. The center of the hood 5 formed as above described is provided with a cen'- tral opening 6 within which a lamp socket 7 is adapted to snugly fit so that the lamp firmly inplace with the lamp 8 projecting down below the hood 5 and in axial alineisjmade precisely as any other electric lamp socket and is provided with the usual conductors 9 and the incandescent lamp 8 of any suitable or desired character. This lamp 8,

however, is preferably relatively small in size, though of high candle power.

Mounted in the body 2 immediately in front of;the lamp 8 is the lens 10. This is preferably a piano-convex lens. This lens .when inserted in this opening 6 will be held ment with the tubular body 2. The socket 7 10 is relatively small in diameter and ismounted in a wall or diaphragm 11. The axis of the lens is, of-course', to be directly opposite to the central or brightest portion of 'th'elamp 8. Shiftably mounted inthe open end of the tubular body 2 is the shifting lens carrier 12 which istubular in form andcarries at its outer extremity the lens 13 which is preferably a double convex lens.

This lens is carried between an inwardly turned flange 14 and an inner ring 15. The flange 14 is knurled on its edge to-permit the .the lamtp justing the 1 ns 13, the powerful parallel ray given out by the lamp 8 and the lens 10 may be focused to any -distance from six up to eighteen inches or more, thus permitting to be placed from six to eighteen inches rom the patient, thus enabling the positioning of the lamp in the most advantageous location to obtain a desired result. In order to secure a proper concentration of the light, it is only necessary to move the lens in or out.

In order to provide positive means for supporting the illuminator without placing any strain upon the electric light'carried thereby and to permit the illuminator to be turned to any desired angle or to be vertically adjusted to any desired extent I preferably provide the supporting rod 16 which at its lower end is screw threaded into a socket 17. This socket fits over the reduced end 18 of a bifurcated knuckle 19. This reduced end 18 of the knuckle is formed with a groove 20 and the socket 17 or sleeve is providedwith the inwardly projecting pins 21 which engage in said groove. Thus the rod 16 can have free rotation relative to the knuckle. Projecting upwardly from the body 2 is the ear 22 adapted to engage in the diaphragm knuckle 19. A pintle 23 passes through the knuckle and ear, one end of the pintle being formed with a head 24 and the other being provided with a nut-25 and recesses 26 for engagement with the wrench. By adjusting this nut the frictional engagement between the ear and the knuckle may be adjusted so that the lamp may be held in any desired angular relation to the rod 16.

In order to provide for the raising and lowering of the lamp as a whole, I preferably use the supporting device as shown inthe figures and comprising the rod 27 to which the upper end of the rod 1.6 is pivotally connected, the end of this rod 27 being curved, as at 28, and passing through an eye 29 on a bracket arm 30. A set screw 31 holds the arm 27 in any desired angular position. It will be obvious that by loosening the set screw and turning the arm 27, the

illuminator may be raised or lowered and that by swinging the arm 16 laterally to one side or the other, a lateral adjustment of the illuminator maybe secured. By rotating the illuminator upon its swivel connection with the rod 16 and by turning the body 2 upon the pintle 23, any desired angular direction of the lamp may be secured. It will be seen that by my invention no strain will be placed u on the lamp or upon the lamp socket and urther that at the rear end of the lamp the light is prevented from being difiuscd upwardly, but is thrown downward, where it ma y be used to illuminate an implement table or for any other purpose.

In order to permit the heat generated by the lamp 9 to pass away, the hood 5 is provided with a plurality of openings 9 preferably concentric to the central opening 6.

Having thus described the invention, what is claimed as new is:

1. A light-concentrator and projector, including a projecting tube open at opposite ends, diagonally cut away at one end to form a hood, a light supported beneath the hood, an objective lens mounted in one end of the tube, and a concentrating lens mounted in the tube between the light and the condensing lens.

2. A dental and surgical lamp, including a cylindrical section forming a projecting tube, a lens fixedly located in the cylindrical section, said section projecting beyond the lens to form a hood, the under side of said hood being cut away, a lamp supported beneath the hood, a section telescopically adjustable into the first named section, and a lens therein.

3. A dental and surgical lamp, including a cylindrical section, a lens fixedly located in the cylindrical section, the said section projecting beyond the lens to form a hood, the under side of said hood being cut away and said hood being provided with an opening for engaging a lamp socket, a section telescopically adjustable in the first named section, a lens therein, and means for supporting the first named section for angular or rotative adjustment.

4. The combination with a dental and surgical lamp, including a tubular section, a lens therein and means for supporting a lamp in alinement with the lens, of a support therefor comprising a sectional rod, one section of the rod being swiveled to the other section and one section being formed with ears, an upwardly projecting lug'on the lamp, a bolt passing through said lug and through said ears, and means for clamping the ears together.

5. A dental and surgical lamp, including a cylindrical section, a lens fixedly located in the cylindrical section, said section projecting beyond the lens to form a hood, the under side of the hood being cut away and the head being provided with an opening for engaging a lamp socket, said hood being further provided with perforations surrounding the opening for the lamp socket permitting the escape of hot air.

6. A dental and surgical lamp, including a cylindrical section, a lens fixedly located in the'cylindrical section, said section projecting beyond the lens to form a hood, the under side of the hood being cut away on a line extending outwardly to the longitudinal In testimony whereof, I afiix my signaaxis of the section, a source of illumination ture in presence of two witnesses. I

supported beneath said hood, ,a lens carrymg section telescopically adjustable in the OLAREWEF' RODGERS first named section, and means for su poyrt- Witnesses: .mg the first named section for angu ar 0r ,ELMER D.-LOOSE, rotative adjnstme'nt. I GEORGE HENRY.

Copies of this patent may he obtained foi'jlve cents each, by addressing the (commissioner 'of Patents,

Washington, D. c. 

